Mathematics, 20.04.2020 21:33 Rawknowledge24

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Which of these statements best explains why pure water has a pH of 7?
Pure water contains only H2O molecules, but pH is based on the concentration of H3O+ ions.
Each molecule of water can dissociate to form 7 H30+ ions.
Water self-ionizes to form an equilibrium system that has [H3O+] = 1.0 x 10-7 M.
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Comparing Solutions
Which of these statements best explains why pure water has a pH of 7?